﻿/**
 * WordPress Administration Navigation Menu
 * Interface JS functions
 *
 * @version 2.0.0
 *
 * @package WordPress
 * @subpackage Administration
 */

var wpNavMenu;

(function($) {

    var api = wpNavMenu = {

        options : {
            menuItemDepthPerLevel : 30, // Do not use directly. Use depthToPx and pxToDepth instead.
            globalMaxDepth : 11
        },

        menuList : undefined,	// Set in init.
        targetList : undefined, // Set in init.
        menusChanged : false,
        isRTL: !! ( 'undefined' != typeof isRtl && isRtl ),
        negateIfRTL: ( 'undefined' != typeof isRtl && isRtl ) ? -1 : 1,

        // Functions that run on init.
        init : function() {
            api.menuList = $('#menu');
            api.targetList = api.menuList;

            this.jQueryExtensions();

            //this.attachMenuEditListeners();

            //this.setupInputWithDefaultTitle();
            //this.attachQuickSearchListeners();
            //this.attachThemeLocationsListeners();

            //this.attachTabsPanelListeners();

            //this.attachUnsavedChangesListener();

            if( api.menuList.length ) // If no menu, we're in the + tab.
                this.initSortables();

        //this.initToggles();

        //this.initTabManager();
        },

        jQueryExtensions : function() {
            // jQuery extensions
            $.fn.extend({
                /**
				* Tính depth dựa vào margin
				*/
                menuItemDepth : function() {
                    var margin = api.isRTL ? this.eq(0).css('margin-right') : this.eq(0).css('margin-left');
                    return api.pxToDepth( margin && -1 != margin.indexOf('px') ? margin.slice(0, -2) : 0 );
                },
                /**
				* Update lại class mi-depth-x cho các đối tượng
				*/
                updateDepthClass : function(current, prev) {
                    return this.each(function(){
                        var t = $(this);
                        prev = prev || t.menuItemDepth();
                        $(this).removeClass('mi-depth-'+ prev )
                        .addClass('mi-depth-'+ current );
                        $(this).find('.mi-depth').val(current);
                    });
                },
                /**
				* Thay đổi class mi-depth-x cho các đối tượng trong quá trình sort
				*/
                shiftDepthClass : function(change) {
                            
                    return this.each(function(){
                        var t = $(this),
                        depth = t.menuItemDepth();
                        $(this).removeClass('mi-depth-'+ depth )
                        .addClass('mi-depth-'+ (depth + change) );
                                    
                        $(this).find('.mi-depth').val(depth + change);            
                    });
                },
                /**
				* Lấy tất cả các menu con cháu
				*/
                childMenuItems : function() {
                    var result = $();
                    this.each(function(){
                        var t = $(this), depth = t.menuItemDepth(), next = t.next();
                        while( next.length && next.menuItemDepth() > depth ) {
                            result = result.add( next );
                            next = next.next();
                        }
                    });
                    return result;
                },
                /**
                         * Edit by TrongHM
                         */
                updateItemData : function() {       
                    this.each(function(){

                        var item = $(this),
                        prevItem = item.prev();

                        var itemData = item.getItemData();
                        
                        if(prevItem != null && prevItem.hasClass('menu-item')){
                            
                            var prevData = prevItem.getItemData();
                            //var parent = prevItem()
                            if(prevData.depth > itemData.depth){
                                while(prevData.depth != itemData.depth){
                                    prevItem = prevItem.prev();
                                    prevData = prevItem.getItemData();
                                }
                            }
                            // thang dang truoc la cha
                            if(prevData.depth < itemData.depth){
                                if(itemData.parent_id != prevData.id)
                                    itemData.parent_id = prevData.id;
                                itemData.ordering = 1;
                            }
                            //thang dang truoc dek phai cha
                            else {
                                itemData.parent_id = prevData.parent_id;
                                itemData.ordering = parseInt(prevData.ordering) + 1;
                            }
                        }else{
                            itemData.parent_id  = 0;
                            itemData.ordering = 1;
                        }
                        item.setItemData(itemData);
                        var ordering = parseInt(itemData.ordering);
                        $('.menu-item').each(function(){
                            var mi = $(this);
                            var data = mi.getItemData();
                            if(
                                data.parent_id == itemData.parent_id 
                                && data.ordering >= ordering 
                                && data.id != itemData.id)
                            {
                                
                                data.ordering = ++ordering;
                                mi.setItemData(data);
                            }
                        });    
                    });
                    //update menu item
                } /**,
				hideAdvancedMenuItemFields : function() {
					return this.each(function(){
						var that = $(this);
						$('.hide-column-tog').not(':checked').each(function(){
							that.find('.field-' + $(this).val() ).addClass('hidden-field');
						});
					});
				},
				/**
				 * Adds selected menu items to the menu.
				 *
				 * @param jQuery metabox The metabox jQuery object.
				 */
                /**
				addSelectedToMenu : function(processMethod) {
					if ( 0 == $('#menu-to-edit').length ) {
						return false;
					}

					return this.each(function() {
						var t = $(this), menuItems = {},
							checkboxes = t.find('.tabs-panel-active .categorychecklist li input:checked'),
							re = new RegExp('menu-item\\[(\[^\\]\]*)');

						processMethod = processMethod || api.addMenuItemToBottom;

						// If no items are checked, bail.
						if ( !checkboxes.length )
							return false;

						// Show the ajax spinner
						t.find('img.waiting').show();

						// Retrieve menu item data
						$(checkboxes).each(function(){
							var t = $(this),
								listItemDBIDMatch = re.exec( t.attr('name') ),
								listItemDBID = 'undefined' == typeof listItemDBIDMatch[1] ? 0 : parseInt(listItemDBIDMatch[1], 10);
							if ( this.className && -1 != this.className.indexOf('add-to-top') )
								processMethod = api.addMenuItemToTop;
							menuItems[listItemDBID] = t.closest('li').getItemData( 'add-menu-item', listItemDBID );
						});

						// Add the items
						api.addItemToMenu(menuItems, processMethod, function(){
							// Deselect the items and hide the ajax spinner
							checkboxes.removeAttr('checked');
							t.find('img.waiting').hide();
						});
					});
				}*/,
                          
                getItemData : function( itemType, id ) {
                    //itemType = itemType || 'menu-item';

                    var itemData = {
                        id : this.find('.mi-id').val(),
                        parent_id : this.find('.mi-parent-id').val(),
                        label : this.find('.mi-label').val(),
                        link : this.find('.mi-link').val(),
                        ordering : this.find('.mi-ordering').val(),
                        depth: this.find('.mi-depth').val(),
                        target: (this.find('.mi-target').attr('checked')) ? this.find('.mi-target').val() : 0,
                        type: this.find('.mi-type').val()
                    };
                    return itemData;
                },
                        
                setItemData : function( itemData, itemType, id ) { // Can take a type, such as 'menu-item', or an id.

                    this.find('input').each(function() {
                        var t = $(this), field;
                        $.each( itemData, function( attr, val ) {
                            if(t.hasClass('mi-'+ attr.replace('_', '-'))){
                                t.val(val);
                            }
                        });
                    });
                    return this;
                }
            });
        },
        /**
		* Chưa nghiên cứu
		initToggles : function() {
			// init postboxes
			postboxes.add_postbox_toggles('nav-menus');

			// adjust columns functions for menus UI
			columns.useCheckboxesForHidden();
			columns.checked = function(field) {
				$('.field-' + field).removeClass('hidden-field');
			}
			columns.unchecked = function(field) {
				$('.field-' + field).addClass('hidden-field');
			}
			// hide fields
			api.menuList.hideAdvancedMenuItemFields();
		},
		*/

        initSortables : function() {
            var currentDepth = 0, originalDepth, minDepth, maxDepth,
            prev, next, prevBottom, nextThreshold, helperHeight, transport,
            menuEdge = api.menuList.offset().left,
            body = $('body'), maxChildDepth,
            menuMaxDepth = initialMenuMaxDepth();

            // Use the right edge if RTL.
            menuEdge += api.isRTL ? api.menuList.width() : 0;
            api.menuList.sortable({
                handle: '.mi-top',
                placeholder: 'ui-state-highlight',
                start: function(e, ui) {
                    var height, width, parent, children, tempHolder;

                    // handle placement for rtl orientation
                    if ( api.isRTL )
                        ui.item[0].style.right = 'auto';

                    transport = ui.item.children('.menu-item-transport');

                    // Set depths. currentDepth must be set before children are located.
                    originalDepth = ui.item.menuItemDepth();
                    updateCurrentDepth(ui, originalDepth);

                    // Attach child elements to parent
                    // Skip the placeholder
                    parent = ( ui.item.next()[0] == ui.placeholder[0] ) ? ui.item.next() : ui.item;
                    children = parent.childMenuItems();
                    transport.append( children );

                    // Update the height of the placeholder to match the moving item.
                    height = transport.outerHeight();
                    // If there are children, account for distance between top of children and parent
                    height += ( height > 0 ) ? (ui.placeholder.css('margin-top').slice(0, -2) * 1) : 0;
                    height += ui.helper.outerHeight();
                    helperHeight = height;
                    height -= 2; // Subtract 2 for borders
                    ui.placeholder.height(height);

                    // Update the width of the placeholder to match the moving item.
                    maxChildDepth = originalDepth;
                    children.each(function(){
                        var depth = $(this).menuItemDepth();
                        maxChildDepth = (depth > maxChildDepth) ? depth : maxChildDepth;
                    });
                    width = ui.helper.find('.mi-top').outerWidth(); // Get original width
                    width += api.depthToPx(maxChildDepth - originalDepth); // Account for children
                    width -= 2; // Subtract 2 for borders
                    ui.placeholder.width(width);

                    // Update the list of menu items.
                    tempHolder = ui.placeholder.next();
                    tempHolder.css( 'margin-top', helperHeight + 'px' ); // Set the margin to absorb the placeholder
                    ui.placeholder.detach(); // detach or jQuery UI will think the placeholder is a menu item
                    $(this).sortable( "refresh" ); // The children aren't sortable. We should let jQ UI know.
                    ui.item.after( ui.placeholder ); // reattach the placeholder.
                    tempHolder.css('margin-top', 0); // reset the margin

                    // Now that the element is complete, we can update...
                    updateSharedVars(ui);
                },
                stop: function(e, ui) {
                    var children, depthChange = currentDepth - originalDepth;

                    // Return child elements to the list
                    children = transport.children().insertAfter(ui.item);

                    // Update depth classes
                    if( depthChange != 0 ) {
                        ui.item.updateDepthClass( currentDepth );
                        children.shiftDepthClass( depthChange );
                        updateMenuMaxDepth( depthChange );
                    }
                    // Register a change
                    api.registerChange();
                    // Update the item data.
                    //edit by tronghm
                    ui.item.updateItemData();

                    // address sortable's incorrectly-calculated top in opera
                    ui.item[0].style.top = 0;

                    // handle drop placement for rtl orientation
                    if ( api.isRTL ) {
                        ui.item[0].style.left = 'auto';
                        ui.item[0].style.right = 0;
                    }

                // The width of the tab bar might have changed. Just in case.
                //api.refreshMenuTabs( true );
                },
                change: function(e, ui) {
                    // Make sure the placeholder is inside the menu.
                    // Otherwise fix it, or we're in trouble.
                    if( ! ui.placeholder.parent().hasClass('menu') )
                        (prev.length) ? prev.after( ui.placeholder ) : api.menuList.prepend( ui.placeholder );

                    updateSharedVars(ui);
                },
                sort: function(e, ui) {
                    var offset = ui.helper.offset(),
                    edge = api.isRTL ? offset.left + ui.helper.width() : offset.left,
                    depth = api.negateIfRTL * api.pxToDepth( edge - menuEdge );
                    // Check and correct if depth is not within range.
                    // Also, if the dragged element is dragged upwards over
                    // an item, shift the placeholder to a child position.
                    if ( depth > maxDepth || offset.top < prevBottom ) depth = maxDepth;
                    else if ( depth < minDepth ) depth = minDepth;

                    if( depth != currentDepth ){
                        updateCurrentDepth(ui, depth);
                    }
                    // If we overlap the next element, manually shift downwards
                    if( nextThreshold && offset.top + helperHeight > nextThreshold ) {
                        next.after( ui.placeholder );
                        updateSharedVars( ui );
                        $(this).sortable( "refreshPositions" );
                    }
                }
            });

            function updateSharedVars(ui) {
                var depth;

                prev = ui.placeholder.prev();
                next = ui.placeholder.next();

                // Make sure we don't select the moving item.
                if( prev[0] == ui.item[0] ) prev = prev.prev();
                if( next[0] == ui.item[0] ) next = next.next();

                prevBottom = (prev.length) ? prev.offset().top + prev.height() : 0;
                nextThreshold = (next.length) ? next.offset().top + next.height() / 3 : 0;
                minDepth = (next.length) ? next.menuItemDepth() : 0;

                if( prev.length )
                    maxDepth = ( (depth = prev.menuItemDepth() + 1) > api.options.globalMaxDepth ) ? api.options.globalMaxDepth : depth;
                else
                    maxDepth = 0;
            }

            function updateCurrentDepth(ui, depth) {
                ui.placeholder.updateDepthClass( depth, currentDepth );
                currentDepth = depth;
            }

            function initialMenuMaxDepth() {
                if( ! body[0].className ) return 0;
                var match = body[0].className.match(/menu-max-depth-(\d+)/);
                return match && match[1] ? parseInt(match[1]) : 0;
            }

            function updateMenuMaxDepth( depthChange ) {
                var depth, newDepth = menuMaxDepth;
                if ( depthChange === 0 ) {
                    return;
                } else if ( depthChange > 0 ) {
                    depth = maxChildDepth + depthChange;
                    if( depth > menuMaxDepth )
                        newDepth = depth;
                } else if ( depthChange < 0 && maxChildDepth == menuMaxDepth ) {
                    while( ! $('.mi-depth-' + newDepth, api.menuList).length && newDepth > 0 )
                        while( ! $('.mi-depth-' + newDepth, api.menuList).length && newDepth > 0 )
                            newDepth--;
                }
                // Update the depth class.
                body.removeClass( 'menu-max-depth-' + menuMaxDepth ).addClass( 'menu-max-depth-' + newDepth );
                menuMaxDepth = newDepth;
            }
        },

        attachMenuEditListeners : function() {
            var that = this;
            $('#update-nav-menu').bind('click', function(e) {
                if ( e.target && e.target.className ) {
                    if ( -1 != e.target.className.indexOf('item-edit') ) {
                        return that.eventOnClickEditLink(e.target);
                    } else if ( -1 != e.target.className.indexOf('menu-save') ) {
                        return that.eventOnClickMenuSave(e.target);
                    } else if ( -1 != e.target.className.indexOf('menu-delete') ) {
                        return that.eventOnClickMenuDelete(e.target);
                    } else if ( -1 != e.target.className.indexOf('item-delete') ) {
                        return that.eventOnClickMenuItemDelete(e.target);
                    } else if ( -1 != e.target.className.indexOf('item-cancel') ) {
                        return that.eventOnClickCancelLink(e.target);
                    }
                }
            });
            $('#add-custom-links input[type="text"]').keypress(function(e){
                if ( e.keyCode === 13 ) {
                    e.preventDefault();
                    $("#submit-customlinkdiv").click();
                }
            });
        },

        /**
		 * An interface for managing default values for input elements
		 * that is both JS and accessibility-friendly.
		 *
		 * Input elements that add the class 'input-with-default-title'
		 * will have their values set to the provided HTML title when empty.
		 */
        setupInputWithDefaultTitle : function() {
            var name = 'input-with-default-title';

            $('.' + name).each( function(){
                var $t = $(this), title = $t.attr('title'), val = $t.val();
                $t.data( name, title );

                if( '' == val ) $t.val( title );
                else if ( title == val ) return;
                else $t.removeClass( name );
            }).focus( function(){
                var $t = $(this);
                if( $t.val() == $t.data(name) )
                    $t.val('').removeClass( name );
            }).blur( function(){
                var $t = $(this);
                if( '' == $t.val() )
                    $t.addClass( name ).val( $t.data(name) );
            });
        },

        attachThemeLocationsListeners : function() {
            var loc = $('#nav-menu-theme-locations'), params = {};
            params['action'] = 'menu-locations-save';
            params['menu-settings-column-nonce'] = $('#menu-settings-column-nonce').val();
            loc.find('input[type="submit"]').click(function() {
                loc.find('select').each(function() {
                    params[this.name] = $(this).val();
                });
                loc.find('.waiting').show();
                $.post( ajaxurl, params, function(r) {
                    loc.find('.waiting').hide();
                });
                return false;
            });
        },

        attachQuickSearchListeners : function() {
            var searchTimer;

            $('.quick-search').keypress(function(e){
                var t = $(this);

                if( 13 == e.which ) {
                    api.updateQuickSearchResults( t );
                    return false;
                }

                if( searchTimer ) clearTimeout(searchTimer);

                searchTimer = setTimeout(function(){
                    api.updateQuickSearchResults( t );
                }, 400);
            }).attr('autocomplete','off');
        },

        updateQuickSearchResults : function(input) {
            var panel, params,
            minSearchLength = 2,
            q = input.val();

            if( q.length < minSearchLength ) return;

            panel = input.parents('.tabs-panel');
            params = {
                'action': 'menu-quick-search',
                'response-format': 'markup',
                'menu': $('#menu').val(),
                'menu-settings-column-nonce': $('#menu-settings-column-nonce').val(),
                'q': q,
                'type': input.attr('name')
            };

            $('img.waiting', panel).show();

            $.post( ajaxurl, params, function(menuMarkup) {
                api.processQuickSearchQueryResponse(menuMarkup, params, panel);
            });
        },

        addCustomLink : function( processMethod ) {
            var url = $('#custom-menu-item-url').val(),
            label = $('#custom-menu-item-name').val();

            processMethod = processMethod || api.addMenuItemToBottom;

            if ( '' == url || 'http://' == url )
                return false;

            // Show the ajax spinner
            $('.customlinkdiv img.waiting').show();
            this.addLinkToMenu( url, label, processMethod, function() {
                // Remove the ajax spinner
                $('.customlinkdiv img.waiting').hide();
                // Set custom link form back to defaults
                $('#custom-menu-item-name').val('').blur();
                $('#custom-menu-item-url').val('http://');
            });
        },

        addLinkToMenu : function(url, label, processMethod, callback) {
            processMethod = processMethod || api.addMenuItemToBottom;
            callback = callback || function(){};

            api.addItemToMenu({
                '-1': {
                    'menu-item-type': 'custom',
                    'menu-item-url': url,
                    'menu-item-title': label
                }
            }, processMethod, callback);
        },

        addItemToMenu : function(menuItem, processMethod, callback) {
            var menu = $('#menu').val(),
            nonce = $('#menu-settings-column-nonce').val();

            processMethod = processMethod || function(){};
            callback = callback || function(){};

            params = {
                'action': 'add-menu-item',
                'menu': menu,
                'menu-settings-column-nonce': nonce,
                'menu-item': menuItem
            };

            $.post( ajaxurl, params, function(menuMarkup) {
                var ins = $('#menu-instructions');
                processMethod(menuMarkup, params);
                if( ! ins.hasClass('menu-instructions-inactive') && ins.siblings().length )
                    ins.addClass('menu-instructions-inactive');
                callback();
            });
        },

        /**
		 * Process the add menu item request response into menu list item.
		 *
		 * @param string menuMarkup The text server response of menu item markup.
		 * @param object req The request arguments.
		 */
        addMenuItemToBottom : function( menuMarkup, req ) {
            $(menuMarkup).hideAdvancedMenuItemFields().appendTo( api.targetList );
        },

        addMenuItemToTop : function( menuMarkup, req ) {
            $(menuMarkup).hideAdvancedMenuItemFields().prependTo( api.targetList );
        },

        attachUnsavedChangesListener : function() {
            $('#menu-management input, #menu-management select, #menu-management, #menu-management textarea').change(function(){
                api.registerChange();
            });

            if ( 0 != $('#menu-to-edit').length ) {
                window.onbeforeunload = function(){
                    if ( api.menusChanged )
                        return navMenuL10n.saveAlert;
                };
            } else {
                // Make the post boxes read-only, as they can't be used yet
                $('#menu-settings-column').find('input,select').prop('disabled', true).end().find('a').attr('href', '#').unbind('click');
            }
        },

        registerChange : function() {
            api.menusChanged = true;
        },

        attachTabsPanelListeners : function() {
            $('#menu-settings-column').bind('click', function(e) {
                var selectAreaMatch, panelId, wrapper, items,
                target = $(e.target);

                if ( target.hasClass('nav-tab-link') ) {
                    panelId = /#(.*)$/.exec(e.target.href);
                    if ( panelId && panelId[1] )
                        panelId = panelId[1]
                    else
                        return false;

                    wrapper = target.parents('.inside').first();

                    // upon changing tabs, we want to uncheck all checkboxes
                    $('input', wrapper).removeAttr('checked');

                    $('.tabs-panel-active', wrapper).removeClass('tabs-panel-active').addClass('tabs-panel-inactive');
                    $('#' + panelId, wrapper).removeClass('tabs-panel-inactive').addClass('tabs-panel-active');

                    $('.tabs', wrapper).removeClass('tabs');
                    target.parent().addClass('tabs');

                    // select the search bar
                    $('.quick-search', wrapper).focus();

                    return false;
                } else if ( target.hasClass('select-all') ) {
                    selectAreaMatch = /#(.*)$/.exec(e.target.href);
                    if ( selectAreaMatch && selectAreaMatch[1] ) {
                        items = $('#' + selectAreaMatch[1] + ' .tabs-panel-active .menu-item-title input');
                        if( items.length === items.filter(':checked').length )
                            items.removeAttr('checked');
                        else
                            items.prop('checked', true);
                        return false;
                    }
                } else if ( target.hasClass('submit-add-to-menu') ) {
                    api.registerChange();

                    if ( e.target.id && 'submit-customlinkdiv' == e.target.id )
                        api.addCustomLink( api.addMenuItemToBottom );
                    else if ( e.target.id && -1 != e.target.id.indexOf('submit-') )
                        $('#' + e.target.id.replace(/submit-/, '')).addSelectedToMenu( api.addMenuItemToBottom );
                    return false;
                } else if ( target.hasClass('page-numbers') ) {
                    $.post( ajaxurl, e.target.href.replace(/.*\?/, '').replace(/action=([^&]*)/, '') + '&action=menu-get-metabox',
                        function( resp ) {
                            if ( -1 == resp.indexOf('replace-id') )
                                return;

                            var metaBoxData = $.parseJSON(resp),
                            toReplace = document.getElementById(metaBoxData['replace-id']),
                            placeholder = document.createElement('div'),
                            wrap = document.createElement('div');

                            if ( ! metaBoxData['markup'] || ! toReplace )
                                return;

                            wrap.innerHTML = metaBoxData['markup'] ? metaBoxData['markup'] : '';

                            toReplace.parentNode.insertBefore( placeholder, toReplace );
                            placeholder.parentNode.removeChild( toReplace );

                            placeholder.parentNode.insertBefore( wrap, placeholder );

                            placeholder.parentNode.removeChild( placeholder );

                        }
                        );

                    return false;
                }
            });
        },

        initTabManager : function() {
            var fixed = $('.nav-tabs-wrapper'),
            fluid = fixed.children('.nav-tabs'),
            active = fluid.children('.nav-tab-active'),
            tabs = fluid.children('.nav-tab'),
            tabsWidth = 0,
            fixedRight, fixedLeft,
            arrowLeft, arrowRight, resizeTimer, css = {},
            marginFluid = api.isRTL ? 'margin-right' : 'margin-left',
            marginFixed = api.isRTL ? 'margin-left' : 'margin-right',
            msPerPx = 2;

            /**
			 * Refreshes the menu tabs.
			 * Will show and hide arrows where necessary.
			 * Scrolls to the active tab by default.
			 *
			 * @param savePosition {boolean} Optional. Prevents scrolling so
			 * 		  that the current position is maintained. Default false.
			 **/
            api.refreshMenuTabs = function( savePosition ) {
				
            }

            $.fn.extend({
                makeTabVisible : function() {
                    var t = this.eq(0), left, right, css = {}, shift = 0;

                    if( ! t.length ) return this;

                    left = t.offset().left;
                    right = left + t.outerWidth();

                    if( right > fixedRight )
                        shift = fixedRight - right;
                    else if ( left < fixedLeft )
                        shift = fixedLeft - left;

                    if( ! shift ) return this;

                    css[marginFluid] = "+=" + api.negateIfRTL * shift + 'px';
                    fluid.animate( css, Math.abs( shift ) * msPerPx, "linear" );
                    return this;
                },
                isTabVisible : function() {
                    var t = this.eq(0),
                    left = t.offset().left,
                    right = left + t.outerWidth();
                    return ( right <= fixedRight && left >= fixedLeft ) ? true : false;
                }
            });

            // Find the width of all tabs
            tabs.each(function(){
                tabsWidth += $(this).outerWidth(true);
            });

            // Set up fixed margin for overflow, unset padding
            css['padding'] = 0;
            css[marginFixed] = (-1 * tabsWidth) + 'px';
            fluid.css( css );

            // Build tab navigation
            arrowLeft = $('<div class="nav-tabs-arrow nav-tabs-arrow-left"><a>&laquo;</a></div>');
            arrowRight = $('<div class="nav-tabs-arrow nav-tabs-arrow-right"><a>&raquo;</a></div>');
            // Attach to the document
            fixed.wrap('<div class="nav-tabs-nav"/>').parent().prepend( arrowLeft ).append( arrowRight );

            // Set the menu tabs
            api.refreshMenuTabs();
            // Make sure the tabs reset on resize
            $(window).resize(function() {
                if( resizeTimer ) clearTimeout(resizeTimer);
                resizeTimer = setTimeout( api.refreshMenuTabs, 200);
            });

            // Build arrow functions
            $.each([{
                arrow : arrowLeft,
                next : "next",
                last : "first",
                operator : "+="
            },{
                arrow : arrowRight,
                next : "prev",
                last : "last",
                operator : "-="
            }], function(){
                var that = this;
                this.arrow.mousedown(function(){
                    var marginFluidVal = Math.abs( parseInt( fluid.css(marginFluid) ) ),
                    shift = marginFluidVal,
                    css = {};

                    if( "-=" == that.operator )
                        shift = Math.abs( tabsWidth - fixed.width() ) - marginFluidVal;

                    if( ! shift ) return;

                    css[marginFluid] = that.operator + shift + 'px';
                    fluid.animate( css, shift * msPerPx, "linear" );
                }).mouseup(function(){
                    var tab, next;
                    fluid.stop(true);
                    tab = tabs[that.last]();
                    while( (next = tab[that.next]()) && next.length && ! next.isTabVisible() ) {
                        tab = next;
                    }
                    tab.makeTabVisible();
                });
            });
        },

        eventOnClickEditLink : function(clickedEl) {
            var settings, item,
            matchedSection = /#(.*)$/.exec(clickedEl.href);
            if ( matchedSection && matchedSection[1] ) {
                settings = $('#'+matchedSection[1]);
                item = settings.parent();
                if( 0 != item.length ) {
                    if( item.hasClass('menu-item-edit-inactive') ) {
                        if( ! settings.data('menu-item-data') ) {
                            settings.data( 'menu-item-data', settings.getItemData() );
                        }
                        settings.slideDown('fast');
                        item.removeClass('menu-item-edit-inactive')
                        .addClass('menu-item-edit-active');
                    } else {
                        settings.slideUp('fast');
                        item.removeClass('menu-item-edit-active')
                        .addClass('menu-item-edit-inactive');
                    }
                    return false;
                }
            }
        },

        eventOnClickCancelLink : function(clickedEl) {
            var settings = $(clickedEl).closest('.menu-item-settings');
            settings.setItemData( settings.data('menu-item-data') );
            return false;
        },

        eventOnClickMenuSave : function(clickedEl) {
            var locs = '',
            menuName = $('#menu-name'),
            menuNameVal = menuName.val();
            // Cancel and warn if invalid menu name
            if( !menuNameVal || menuNameVal == menuName.attr('title') || !menuNameVal.replace(/\s+/, '') ) {
                menuName.parent().addClass('form-invalid');
                return false;
            }
            // Copy menu theme locations
            $('#nav-menu-theme-locations select').each(function() {
                locs += '<input type="hidden" name="' + this.name + '" value="' + $(this).val() + '" />';
            });
            $('#update-nav-menu').append( locs );
            // Update menu item position data
            api.menuList.find('.menu-item-data-position').val( function(index) {
                return index + 1;
            } );
            window.onbeforeunload = null;

            return true;
        },

        eventOnClickMenuDelete : function(clickedEl) {
            // Delete warning AYS
            if ( confirm( navMenuL10n.warnDeleteMenu ) ) {
                window.onbeforeunload = null;
                return true;
            }
            return false;
        },

        eventOnClickMenuItemDelete : function(clickedEl) {
            var itemID = parseInt(clickedEl.id.replace('delete-', ''), 10);
            api.removeMenuItem( $('#menu-item-' + itemID) );
            api.registerChange();
            return false;
        },

        /**
		 * Process the quick search response into a search result
		 *
		 * @param string resp The server response to the query.
		 * @param object req The request arguments.
		 * @param jQuery panel The tabs panel we're searching in.
		 */
        processQuickSearchQueryResponse : function(resp, req, panel) {
            var matched, newID,
            takenIDs = {},
            form = document.getElementById('nav-menu-meta'),
            pattern = new RegExp('menu-item\\[(\[^\\]\]*)', 'g'),
            $items = $('<div>').html(resp).find('li'),
            $item;

            if( ! $items.length ) {
                $('.categorychecklist', panel).html( '<li><p>' + navMenuL10n.noResultsFound + '</p></li>' );
                $('img.waiting', panel).hide();
                return;
            }

            $items.each(function(){
                $item = $(this);

                // make a unique DB ID number
                matched = pattern.exec($item.html());

                if ( matched && matched[1] ) {
                    newID = matched[1];
                    while( form.elements['menu-item[' + newID + '][menu-item-type]'] || takenIDs[ newID ] ) {
                        newID--;
                    }

                    takenIDs[newID] = true;
                    if ( newID != matched[1] ) {
                        $item.html( $item.html().replace(new RegExp(
                            'menu-item\\[' + matched[1] + '\\]', 'g'),
                        'menu-item[' + newID + ']'
                        ) );
                    }
                }
            });

            $('.categorychecklist', panel).html( $items );
            $('img.waiting', panel).hide();
        },

        removeMenuItem : function(el) {
            var children = el.childMenuItems();

            el.addClass('deleting').animate({
                opacity : 0,
                height: 0
            }, 350, function() {
                var ins = $('#menu-instructions');
                el.remove();
                children.shiftDepthClass(-1).updateParentMenuItemDBId();
                if( ! ins.siblings().length )
                    ins.removeClass('menu-instructions-inactive');
            });
        },

        depthToPx : function(depth) {
            return depth * api.options.menuItemDepthPerLevel;
        },

        pxToDepth : function(px) {
            return Math.floor(px / api.options.menuItemDepthPerLevel);
        }

    };

    $(document).ready(function(){
        wpNavMenu.init();
    });

})(jQuery);
